Use TimeDelta::operator/() more, chrome/ edition.

Bug: 1104532
Change-Id: I5a1ba068f5ed6bbf16e98339d534f5f083c5d058
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2355010
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Theresa  <twellington@chromium.org>
Auto-Submit: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Theresa  <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#797892}

chrome/browser/chromeos/arc/tracing/arc_app_performance_tracing_session.cc

@@ -191,8 +191,7 @@ void ArcAppPerformanceTracingSession::Analyze(base::TimeDelta tracing_period) {
   const size_t lower_position = frame_deltas_.size() / 10;
   const size_t upper_position = frame_deltas_.size() - 1 - lower_position;
   const double render_quality =
-      frame_deltas_[lower_position].InMicrosecondsF() /
-      frame_deltas_[upper_position].InMicrosecondsF();
+      frame_deltas_[lower_position] / frame_deltas_[upper_position];
 
   const double fps = frame_deltas_.size() / tracing_period.InSecondsF();
 

chrome/browser/chromeos/policy/minimum_version_policy_handler.cc

@@ -82,8 +82,7 @@ BuildState* GetBuildState() {
 }
 
 int GetDaysRounded(base::TimeDelta time) {
-  return base::ClampRound(time.InSecondsF() /
-                          base::TimeDelta::FromDays(1).InSecondsF());
+  return base::ClampRound(time / base::TimeDelta::FromDays(1));
 }
 
 chromeos::UpdateEngineClient* GetUpdateEngineClient() {

chrome/browser/metrics/power_metrics_provider_mac_unittest.cc

@@ -141,8 +141,8 @@ TEST_F(PowerMetricsProviderTest, BatteryDischargeCaptureIsEarly) {
   // |kMetricsCollectionInterval|.
   int discharge =
       base::ClampFloor((kFirstReading - kSecondReading) *
-                       kMetricsCollectionInterval.InSecondsF() /
-                       (second_capture_time - first_capture_time).InSeconds());
+                       (kMetricsCollectionInterval /
+                        (second_capture_time - first_capture_time)));
   histogram_tester_.ExpectUniqueSample(kHistogramName, discharge, 1);
 }
 
@@ -191,7 +191,7 @@ TEST_F(PowerMetricsProviderTest, BatteryDischargeCaptureIsLate) {
   // |kMetricsCollectionInterval|.
   int discharge =
       base::ClampFloor((kFirstReading - kSecondReading) *
-                       kMetricsCollectionInterval.InSecondsF() /
-                       (second_capture_time - first_capture_time).InSeconds());
+                       (kMetricsCollectionInterval /
+                        (second_capture_time - first_capture_time)));
   histogram_tester_.ExpectUniqueSample(kHistogramName, discharge, 1);
 }

chrome/browser/ui/ash/launcher/shelf_spinner_controller.cc

@@ -41,8 +41,7 @@ constexpr double kInactiveTransparency = 0.5;
 double TimeProportionSince(const base::Time& t1,
                            const base::Time& t2,
                            const base::TimeDelta& d) {
-  return std::max(
-      0.0, std::min(1.0, (t2 - t1).InMillisecondsF() / d.InMillisecondsF()));
+  return std::max(0.0, std::min(1.0, (t2 - t1) / d));
 }
 
 }  // namespace

chrome/browser/ui/views/accessibility/accessibility_focus_highlight.cc

@@ -343,15 +343,12 @@ void AccessibilityFocusHighlight::OnAnimationStep(base::TimeTicks timestamp) {
   float opacity = 1.0f;
   if (time_since_layer_create < fade_in_time_) {
     // We're fading in.
-    opacity = time_since_layer_create.InSecondsF() / fade_in_time_.InSecondsF();
+    opacity = time_since_layer_create / fade_in_time_;
   } else if (time_since_focus_move > persist_time_) {
     // Fading out.
-    float time_since_began_fading =
-        time_since_focus_move.InSecondsF() -
-        (fade_in_time_.InSecondsF() + persist_time_.InSecondsF());
-    float fade_out_time_float = fade_out_time_.InSecondsF();
-
-    opacity = 1.0f - (time_since_began_fading / fade_out_time_float);
+    base::TimeDelta time_since_began_fading =
+        time_since_focus_move - (fade_in_time_ + persist_time_);
+    opacity = 1.0f - (time_since_began_fading / fade_out_time_);
   }
 
   // Layer::SetOpacity will throw an error if we're not within 0...1.

chrome/browser/ui/views/tabs/tab_animation.cc

@@ -73,8 +73,8 @@ TabAnimationState TabAnimation::GetCurrentState() const {
     return target_state_;
 
   const base::TimeDelta elapsed_time = base::TimeTicks::Now() - start_time_;
-  const double normalized_elapsed_time = base::ClampToRange(
-      elapsed_time.InMillisecondsF() / duration_.InMillisecondsF(), 0.0, 1.0);
+  const double normalized_elapsed_time =
+      base::ClampToRange(elapsed_time / duration_, 0.0, 1.0);
   const double interpolation_value = gfx::Tween::CalculateValue(
       gfx::Tween::Type::EASE_OUT, normalized_elapsed_time);
   return TabAnimationState::Interpolate(interpolation_value, initial_state_,

chrome/common/profiler/thread_profiler.cc

@@ -193,9 +193,8 @@ PeriodicSamplingScheduler::PeriodicSamplingScheduler(
     base::TimeDelta sampling_duration,
     double fraction_of_execution_time_to_sample,
     base::TimeTicks start_time)
-    : period_duration_(
-          base::TimeDelta::FromSecondsD(sampling_duration.InSecondsF() /
-                                        fraction_of_execution_time_to_sample)),
+    : period_duration_(sampling_duration /
+                       fraction_of_execution_time_to_sample),
       sampling_duration_(sampling_duration),
       period_start_time_(start_time) {
   DCHECK(sampling_duration_ <= period_duration_);